Fabian Kastner (born 1977) is a Swedish writer and literary critic, living in Berlin.
Kastner caused a commotion in 2006 with his debut novel Oneirine, which turned out to be a literary experiment too far for the majority of critics: the book consisted exclusively of unattributed, pasted-together quotes from one thousand works of world literature. By doing so, Kastner wanted to discuss the issue of whether originality is possible in literature. The book was later turned into a library artwork at Bonniers Konsthall, a venue for Swedish and international contemporary art in the centre of Stockholm.
In The Layman (2013), Kastner took as his starting point a theological essay on madness, “Memoirs of My Nervous Illness” by Daniel Paul Schreber, from 1903, creating from it a hallucinatory literary fantasy. Schreber was a German lawyer who spent long periods of his life in various mental hospitals, and Kastner allows the reader to enter into his paranoid universe, a claustrophobic space in which concepts such as madness and sanity are twisted, turn after turn.
In 2017, Kastner returned to the gallery space of Bonniers Konsthall to write a book from start to finish in twenty-four hours. The resulting novella, Archive of the Average Swede, was published in English as the fourth title in Cabinet’s experimental “24-Hour Book” series.